Inverted bracket brick
Techniques that enable stud rotation perfectly in system are neat. This is one example that simulates a 2x3 brick. The effective load is 4 studs on each side, so it's one of the sturdier 180 degree techniques of this size.
To find the different pieces needed for this technique you can search LEGO's online Pick-a-Brick for the design ID's. We link other market places directly on each individual piece page, which you can find below.
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Assembly. We get six studs on one side and four on the other.
A plate under the hinge ensures the studs line up.
The original technique used a plate to flatten the edge.